Check Valve

Didtek Check Valve are used to allow flow through a pipeline in one direction and prevent flow (check) from returning in the opposite direction. Check valves are commonly installed on the discharge side of the pump.   The most important role of a check valve is to act as the automatic shut off valve when the pump stops to prevent draining of the system.

Cast Steel 6inch 150LB Lift Check Valve

Cast Steel 6inch 150LB Lift Check Valve

Cast Steel 6inch 150LB Lift Check Valve, Check Valve, BS1868, Steel Valves, ASME B16.34, Face to face ASME B16.10

3'' 150LB Duplex 2205 Piston Check Valve

3'' 150LB Duplex 2205 Piston Check Valve

3'' 150LB Duplex 2205 Piston Check Valve,Size: 3'',Material: 4A,Category: Lift,Connection: Flange,Check Valve,BS1868,Steel Valves,ASME B16.34

High Pressure Monel Flanged 6 inch Check Valve

High Pressure Monel Flanged 6 inch Check Valve

High Pressure Monel Flanged 6 inch Check Valve,Size: 6'',Material: 4A,Category: Lift,Connection: Flange,Check Valve,BS1868,Steel Valves,ASME B16.34

Stainless Steel Swing Check Valve

Stainless Steel Swing Check Valve

Stainless steel Check Valves are manufactured to the latest edition of BS1868 and tested to API Standard 598.

Swing Check Valve Counterweight

Swing Check Valve Counterweight

Carbon steel Check Valves with Counterweight are manufactured to the latest edition of BS1868 and tested to API Standard 598.

Pressure Seal Swing Check Valve

Pressure Seal Swing Check Valve

Alloy steel Check Pressure Seal Swing Check Valves are manufactured to the latest edition of BS1868 and tested to API Standard 598.

WCB Cast Steel Swing Check Valve

WCB Cast Steel Swing Check Valve

Carbon steel Swing Check Valves are manufactured to the latest edition of BS1868 and tested to API Standard 598.

Full Port Hard Faced Metal Seat RTJ Fill ANSI Body Swing Check Valve

Full Port Hard Faced Metal Seat RTJ Fill ANSI Body Swing Check Valve

Full Port Hard Faced Metal Seat RTJ Fill ANSI Body Swing Check Valve Applicable Standards: Check Valve, BS1868 Steel Valves, ASME B16.34

Heat Jacket Swing Check Valve

Heat Jacket Swing Check Valve

Heat Jacket Swing Check Valve Applicable Standards: Check Valve, BS1868 Steel Valves, ASME B16.34 Face to face ASME B16.10

B148 C95800 Body Swing Check Valve With C95800+NBR Disc

B148 C95800 Body Swing Check Valve With C95800+NBR Disc

B148 C95800 Body Swing Check Valve With C95800+NBR Disc Applicable Standards: Check Valve, BS1868 Steel Valves, ASME B16.34

Galaxy Expansion Phase III Project Chemical Terminal Swing Check Valve

Galaxy Expansion Phase III Project Chemical Terminal Swing Check Valve

Galaxy Expansion Phase III Project Chemical Terminal Swing Check Valve Applicable Standards:Check Valve,BS1868 Steel Valves,ASME B16.34,Face to face ASME B16.10,End Flanges ASME B16.5/ASME B16.47

API6D Full Open Full Bore ANSI Class 300 Swing Check Valve

API6D Full Open Full Bore ANSI Class 300 Swing Check Valve

API6D Full Open Full Bore ANSI Class 300 Swing Check Valve,Applicable Standards:Check Valve,BS1868,Steel Valves,ASME B16.34,Face to face ASME B16.10,End Flanges ASME B16.5/ASME B16.47

Characteristic
A105 seat ring is seal welded to provide tightly close off.
Seat rings have 13%Cr or stellite overlay to provide increased resistance to wear, abrasion, erosion.
Disc is secured by welded disc nut to prevent disassembly due to vibration and closure impact.
Disc to hanger connection allows for free disc movement to avoid localized wear.

What Is A Check Valve?

Didtek Check Valve, also known as a non-return or one-way valve, is a mechanical device that allows a gas or liquid to flow freely in one direction while preventing reverse flow in the opposite direction. The direction in which the fluid or gas can flow is called the free flow direction; the direction in which fluid is prevented from flowing is called the checked or non-return direction.

How Does A Check Valve Work?

When the pressure behind the valve is higher than the pressure in front of it (a condition known as the cracking pressure), the valve opens and permits the flow of the contained fluid in the chosen direction. When the pressure behind the valve lessens, the valve closes to prevent what has already passed through it from flowing backward in the wrong direction.

How To Choose The Right Check Valve?

You must think about the needs of your system in order to choose the right type of check valve. You also need to think about the size and other specs for the pipes or systems.

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